Round|Lab Grown|IGI

4.27ct D IF Round Lab Grown Diamond

ID • D/IF • IGI LG828680589

Shape and cutting style on the report: Round brilliant

Certificate IGI LG828680589

Diamond specifications and retailer prices

From €3,128 EUR

HK$27,300 HKD

As of October 31, 2026

Save €9,663 EUR (76%) vs most expensive(unlock to see where)

14 retailers carry this diamond

Most expensive: €12,791 EUR at Brilliant Earth · As of October 30, 2026

View at Brilliant Earth

About this 4.27ct lab-grown round diamond

This 4.27ct lab-grown round sits in the three to five carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG828680589 or 828680589. Listed at 14 retailers as of October 30, 2026, with prices from €3,128 to €12,791, a €9,663 spread on the same certified stone. Brilliant Earth lists it at €12,791. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

4.27

Carat

Colour

Clarity

Ideal

Cut

Specifications

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle35.3°

Pavilion angle40.8°

OriginLab Grown

Grading LabIGI

CertificateIGI LG828680589

Dimensions10.42 × 10.37 × 6.45 mm

L/W Ratio1.00

Girdle conditionFaceted

Cert comments

As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II

View IGI Report →View Loupe360 Video →

Top View

OriginLab Grown

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateIGI LG828680589

Side View

Caratlytics Score

How it works →

Excellent

Excellent quality and great value

Unlock full score analysis

See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31

Current: €12,791 EUR|Low: €3,128 EUR|High: €22,252 EUR|Avg: €7,280 EUR|-42.5%

Brilliant Earth

Retailer 2

Retailer 3

Retailer 4

Retailer 5

Retailer 6

Retailer 7

Retailer 8

Retailer 9

Retailer 10

Retailer 11

Retailer 12

Retailer 13

October 31, 2026

Retailer 13€3,128 EUR

Retailer 6€3,458 EUR

Retailer 10€3,867 EUR

Retailer 2€4,091 EUR

Retailer 11€4,477 EUR

Retailer 7€5,474 EUR

Retailer 3€6,727 EUR

Retailer 12€6,866 EUR

Retailer 8€6,922 EUR

Retailer 5€8,974 EUR

Retailer 4€9,934 EUR

Retailer 9€10,073 EUR

Brilliant Earth€12,791 EUR

34 data points across 13 retailers

14 retailers€3,128 EUR to €12,791 EUR

Cheapest Retailer

€3,128 EUR

HK$27,300 HKD

Retailer 2

€3,458 EUR

£3,042 GBP

View

Retailer 3

€3,867 EUR

$4,320 USD

View

Retailer 4

€4,091 EUR

View

Retailer 5

€4,477 EUR

$5,002 USD

View

Retailer 6

€5,474 EUR

ZAR 98,792 ZAR

View

B+

Retailer 7

€6,727 EUR

$7,515 USD

View

B+

Retailer 8

€6,866 EUR

$7,671 USD

View

B+

Retailer 9

€6,922 EUR

£6,089 GBP

View

B+

Retailer 10

€7,644 EUR

$8,540 USD

View

B+

Retailer 11

€8,974 EUR

$10,026 USD

View

B+

Retailer 12

€9,934 EUR

$11,098 USD

View

Retailer 13

€10,073 EUR

A$17,314 AUD

View

Price last confirmed 23 days ago

Most Expensive

Brilliant Earth

21581974A · Oct 30

€12,791 EUR

$14,290 USD

View

13 more retailers have this diamond

Prices start from €3,128 EURSave up to €9,663 EUR

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

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4.27ct Round

€3,128 EUR